/*
 * Copyright (c) 2020 Uber Technologies, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *     http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.uber.rss.util;

import java.io.IOException;
import java.io.OutputStream;

public class CountedOutputStream extends OutputStream {
    private long writtenBytes = 0;

    private OutputStream underlyingStream;

    public CountedOutputStream(OutputStream underlyingStream) {
        this.underlyingStream = underlyingStream;
    }

    @Override
    public synchronized void write(int i) throws IOException {
        underlyingStream.write(i);
        writtenBytes++;
    }

    @Override
    public synchronized void write(byte[] b, int off, int len) throws IOException {
        underlyingStream.write(b, off, len);
        writtenBytes += len;
    }

    @Override
    public synchronized void flush() throws IOException {
        underlyingStream.flush();
    }

    @Override
    public synchronized void close() throws IOException {
        underlyingStream.close();
    }

    public synchronized long getWrittenBytes() {
        return writtenBytes;
    }
}
